[greymule]

I've been over Fed versus OBR a million times on this one and have never seen any evidence that OBR uses that "blue" line. In OBR, a ball that lands halfway between the mound and 2B is not considered to have landed "on or beyond first base or third base." If anyone can cite authoritative opinion otherwise, I'd love to know.

Interesting that Fed uses the blue line only for baseball and specifically inserts the 1B-3B line in its definition. Fed softball uses the same wording but omits mention of the 1B-3B line. So Fed softball uses the "red" lines (except that I would move them in to the front of the bases).